body {
  font-family: Arial, sans-serif;
  max-width: 800px;
  margin: 50px auto;
  padding: 20px;
}

h1 {
  color: #333;
}

.input-section {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

input[type="text"] {
  width: 100%;
  padding: 10px;
  font-size: 16px;
  border: 2px solid #ddd;
  border-radius: 4px;
}

button {
  margin-top: 10px;
  padding: 10px 20px;
  font-size: 16px;
  background-color: #003d99;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

select {
  padding: 8px;
  font-size: 16px;
  margin-bottom: 20px;
  border: 2px solid #ddd;
  border-radius: 4px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

th,
td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

th {
  background-color: #f8f9fa;
  font-weight: bold;
}

.top-user {
  background-color: gold;
  font-weight: bold;
}

.error {
  color: red;
  padding: 10px;
  background-color: #ffe6e6;
  border-radius: 4px;
  margin: 10px 0;
}

.loading {
  color: #007bff;
  font-style: italic;
}

.hidden {
  display: none;
}